:root{--bg:#f7f8fa;--surface:#fff;--fg:#1c2530;--muted:#5b6673;--line:#d9dfe6;--accent:#1a86d6;--accent-fg:#fff;--accent-soft:#e6f2fc;--dot:#e39125;--ok:#1f7a4d;--err:#b23a2f;--display:"Montserrat", "Helvetica Neue", Arial, sans-serif;--body:"Montserrat", "Helvetica Neue", Arial, sans-serif;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#131920;--surface:#1b232c;--fg:#e8edf2;--muted:#9aa7b4;--line:#2d3945;--accent:#5cb1f0;--accent-fg:#0b1a28;--accent-soft:#1c3247;--dot:#f0a64a;--ok:#5ccf92;--err:#f08a7e;color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--fg);font-family:var(--body);margin:0;font-size:16px;line-height:1.6}img{max-width:100%;height:auto}[hidden]{display:none!important}h1,h2,h3{font-family:var(--display);text-wrap:balance;margin:0;font-weight:700;line-height:1.2}h1{font-size:clamp(1.7rem,4vw,2.4rem)}h2{font-size:clamp(1.35rem,3vw,1.75rem)}h3{font-size:1.15rem}p{margin:0}a{color:var(--accent)}.wrap{max-width:880px;margin:0 auto;padding-inline:16px}.site-header{z-index:5;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0}.site-header .wrap{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;min-height:60px;padding-block:8px;display:flex}.brand{color:var(--fg);align-items:center;gap:10px;text-decoration:none;display:flex}.brand b{font-family:var(--display);color:var(--accent);letter-spacing:.01em;font-size:1.45rem;font-weight:700}.brand small{color:var(--muted);font-size:.8rem;line-height:1.1}.nav{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.nav a{color:var(--fg);padding:8px 10px;font-size:.95rem;font-weight:600;text-decoration:none}.nav a:hover,.nav a:focus-visible{color:var(--accent);outline:none}.nav a[aria-current=page]{color:var(--accent)}.nav a.cta{background:var(--accent);color:var(--accent-fg);border-radius:6px;margin-left:6px;padding:8px 14px}.nav a.cta:hover,.nav a.cta:focus-visible{color:var(--accent-fg);filter:brightness(1.08)}.nav a.cta[aria-current=page]{color:var(--accent-fg);filter:brightness(.92)}main{gap:40px;padding-block:32px 56px;display:grid}section{gap:16px;display:grid}.lede{color:var(--muted);max-width:60ch;font-size:1.1rem}.eyebrow{text-transform:uppercase;letter-spacing:.09em;color:var(--dot);font-size:.78rem;font-weight:700}.hero{border-bottom:1px solid var(--line);gap:14px;padding-block:8px 16px;display:grid}.actions{flex-wrap:wrap;gap:10px;margin-top:6px;display:flex}.btn{font:inherit;border:1px solid var(--accent);background:var(--accent);color:var(--accent-fg);cursor:pointer;border-radius:8px;padding:10px 18px;font-weight:600;text-decoration:none;display:inline-block}.btn.ghost{color:var(--accent);background:0 0}.btn:focus-visible{outline:3px solid var(--dot);outline-offset:2px}.btn[disabled]{opacity:.6;cursor:progress}.prose{gap:12px;max-width:66ch;display:grid}.prose ul{gap:4px;margin:0;padding-left:1.2em;display:grid}.facts{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;display:grid}.fact{background:var(--surface);border:1px solid var(--line);border-radius:10px;align-content:start;gap:4px;min-width:0;padding:14px 16px;display:grid}.fact .k{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:.8rem}.fact .v{font-family:var(--display);font-variant-numeric:tabular-nums;font-size:1.2rem;font-weight:600}.books{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;display:grid}.book{background:var(--surface);border:1px solid var(--line);border-radius:12px;grid-template-columns:84px 1fr;gap:14px;min-width:0;padding:16px;display:grid}.cover{aspect-ratio:3/4;color:#fff;border-radius:3px 8px 8px 3px;align-content:end;width:84px;max-width:100%;padding:8px;display:grid;box-shadow:inset 6px 0 #0000002e,0 4px 10px #0000002e}.cover span{opacity:.9;font-size:.6rem;line-height:1.1}.cover strong{font-size:2rem;line-height:1}.c1{background:linear-gradient(160deg,#1a86d6,#0f5a95)}.c2{background:linear-gradient(160deg,#2a9d8f,#1a6a60)}.c3{background:linear-gradient(160deg,#e39125,#a85f0b)}.c4{background:linear-gradient(160deg,#6c5ce7,#3f3599)}.book .meta{align-content:start;gap:6px;min-width:0;display:grid}.book h3{font-size:1.05rem}.price{font-family:var(--display);font-variant-numeric:tabular-nums;font-size:1.3rem;font-weight:700}.small{color:var(--muted);font-size:.85rem}.pdf{color:var(--accent);border-bottom:1px solid #0000;align-items:center;gap:6px;font-size:.9rem;font-weight:600;text-decoration:none;display:inline-flex}.pdf:hover{border-bottom-color:var(--accent)}.pdf svg{fill:none;stroke:currentColor;stroke-width:2px;flex:none;width:16px;height:16px}.exams{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;display:grid}.exam{background:var(--surface);border:1px solid var(--line);border-radius:10px;grid-template-rows:auto 1fr;min-width:0;display:grid;overflow:hidden}.exam .bar{background:var(--accent);color:var(--accent-fg);flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;padding:12px 18px;display:flex}.exam .bar h3{color:inherit;font-size:1.1rem}.exam .bar .price{white-space:nowrap;font-size:1.2rem}.exam ul{color:var(--muted);gap:4px;margin:0;padding:14px 18px 16px 2.2em;font-size:.95rem;display:grid}form{gap:18px;max-width:640px;display:grid}fieldset{border:0;gap:10px;min-width:0;margin:0;padding:0;display:grid}legend{font-family:var(--display);margin-bottom:8px;padding:0;font-size:1.1rem;font-weight:700}.row{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;display:grid}label.f{gap:4px;min-width:0;font-size:.9rem;font-weight:600;display:grid}input[type=text],input[type=email],input[type=tel],textarea{font:inherit;border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:8px;width:100%;min-width:0;padding:9px 11px;font-size:1rem}input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}textarea{resize:vertical;min-height:110px}.choice{border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:8px;align-items:center;gap:10px;padding:10px 12px;font-weight:400;display:flex}.choice input{width:18px;height:18px;accent-color:var(--accent);flex:none}.choice .t{flex:1;min-width:0}.choice .p{font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:600}.radios{flex-wrap:wrap;gap:16px;display:flex}.radios label{align-items:center;gap:6px;display:flex}.total{border-top:2px solid var(--fg);justify-content:space-between;align-items:baseline;padding-top:10px;font-weight:600;display:flex}.total b{font-family:var(--display);font-variant-numeric:tabular-nums;font-size:1.4rem}.status{border:1px solid var(--accent);background:var(--accent-soft);border-radius:8px;padding:12px 14px;font-size:.95rem}.status.err{border-color:var(--err);color:var(--err);background:0 0}.status.ok{border-color:var(--ok);color:var(--ok);background:0 0}.hp{width:1px;height:1px;position:absolute;left:-9999px;overflow:hidden}.contact{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;display:grid}dl{grid-template-columns:auto 1fr;gap:6px 14px;margin:0;font-size:.95rem;display:grid}dt{color:var(--muted)}dd{font-variant-numeric:tabular-nums;margin:0}.site-footer{border-top:1px solid var(--line);color:var(--muted);padding-block:22px;font-size:.85rem}.site-footer .wrap{flex-wrap:wrap;justify-content:space-between;gap:12px;display:flex}@media (width<=480px){.book{grid-template-columns:70px 1fr}.cover{width:70px}.nav a{padding:6px 8px}.nav a.cta{margin-left:0}}